Treatment method for slaughter wastewater

Abstract

The invention discloses a treatment method for slaughter wastewater. The treatment method includes the steps of pretreatment, biochemical treatment, precipitation separation, oxidative decolorization, activated carbon adsorption, disinfection treatment and sludge concentration. Through adopting the advanced, practical, mature and reliable treatment technology, the inflow requirements for water large in water quality fluctuation and amount are met, and it is ensured that the treated wastewater can not be discharged until reaching standards. By the adoption of the reasonable technology and reasonable arrangement, the construction cost is lowered as far as possible, and on the premise of guaranteeing safe, economical and stable operation of a system, the good treatment effect is achieved with the minimum investment. Based on the rule of the advanced and mature technology and reliable quality, the relation between manual operation and automatic control is reasonably handled, an automation technology is adopted for the step where manual operation is inconvenient, and the labor cost is high, and therefore the operation management level of the system is increased.

Description

technical field [0001] The invention relates to a method for treating slaughter wastewater. Background technique [0002] Food companies will produce a certain amount of slaughter wastewater in the production process. The wastewater comes from washing, rinsing, slaughter and other workshop floor washing, scalding, dissection, non-staple food processing, oil washing and other links. The wastewater contains a lot of blood and grease , minced meat, feces and hair, and has an unpleasant stink. [0003] This type of wastewater also has the characteristics of large water volume, uneven drainage, deep color, high concentration of organic matter, and many impurities and suspended solids. In addition, the biggest difference between it and other high-concentration organic wastewater is that its NH3-N concentration is higher (approximately 100mg / l), so the impact of NH3-N on wastewater treatment should be fully considered in process design. This type of wastewater is difficult to tre...

AI Technical Summary

Problems solved by technology

[0003] This type of wastewater also has the characteristics of large water volume, uneven drainage, deep color, high concentration of organic matter, and many impurities and suspended solids. In addition, the biggest difference between it and other high-concentration organic wastewater is that its NH3-N concentration is higher (approximately 100mg / l), so the impact of NH3-N on wastewater treatment should be fully considered in process design

This type of wastewater is difficult to treat, and if it is discharged directly into the environment without treatment, it will cause serious pollution to the surrounding environment.

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